Added brief documentation to the handler classes.

git-svn-id: https://google-api-ruby-client.googlecode.com/svn/trunk@12 c1d61fac-ed7f-fcc1-18f7-ff78120a04ef

lib/google/api_client/auth/oauth_1.rb

@@ -17,6 +17,8 @@ require "oauth"
 
 module Google #:nodoc:
   class APIClient #:nodoc:
+    ##
+    # An OAuth 1.0a handler.
     class OAuth1
       ##
       # The default OAuth 1.0a configuration values.  These may be overrided